Febdikakd tellandbe



(No Model.) I

F. T'ELLANDER.-

APPARATUS FOR CASTING HOLLOW ARTICLES IN METALLIC MOL-DS.

Patented Sept. 6, 1881.

i NR INVENTOR WITNESSES: v

ATTORNEY N. Prnns, Flwlc lllhugnpher. Washinglnn. n, c,

NITED STATES PATENT OFFICE.

FERDINAND TELLANDER, OF WENERSBORG, SWEDEN.

APPARATUS FOR CASTING HOLLOW ARTICLES IN METALLIC MOLDS.

SPECIFICATION forming part of Letters Patent No. 246,694, datedSeptember 6, 1881.

Application filed June 18, 1881. (N0 model.)

To all whom it may concern:

Beit known that I, FERDINAND TELLANDER, of Wenersborg, in the Kingdom ofSweden, have invented certain new and useful Improvements in Apparatusfor Casting Hollow Articles in Metallic Molds, of which the following isa specification.

The object of this invention is to cast all kinds of cylindrical,conical, or other hollow articles in metallic molds in such a mannerthat perfectly-smooth surfaces are obtained, and thereby the necessityof turning them in a lathe is dispensed with.

The invention consists of aflask provided with a hollow base part, whichforms a reservoir for the cooling-liquid. The core of the mold issupported-at the bottom by a removable key of the base part, which coreis dropped into the base part on removing the key before the cast metalsettles or afterit has settled by the blow of a hammer. The moldingboxis retained by vertical standards on the base part.

In the accompanying drawings, Figure 1 represents a vertical centralsection of my improved apparatus for casting hollow metal ar ticles withsmooth surfaces in metallic molds; and Figs. 2 and 3 are similarsections, showing the apparatus arranged for hollow articles ofdifferent shapes.

Similar letters of reference indicate corresponding parts.

The apparatus consists of a molding box or flask, A, of metal, which issupported by vertical standards H on a hollow base part, A, which latterforms a reservoir for the coolingliquid. The height of the base part hasto be made equal to the length of the metallic core 0 of the flask, sothat the latter can be dropped into the reservoir after the metal hasbeen poured into the mold. The lower part of the flask A is providedwith recesses, by which it is guided along the standards H into itsproper posit-ion on the base part, A. The base part, A, is provided nearits lid or top with a horizontal guide-opening, through which akey, B,is inserted, which extends toward the center of the base part, as shownclearly in Fig. 1. The keyB is provided with a projection or shoulder,a, by which itis stopped when pushed in to its full extent. The key Bextends sufficiently into the apparatus to enable it to support thecoreG of the mold. The metallic core G is provided withgrease-grooves min the usual manner, and is guided in a central opening of the top ofthe base part, A.

The sand or other filling material ofthe mold is provided with channelsor passages e and f, of which one forms the inlet for the metal and theother the outlet or vent for the air.

hen the core is properly adjusted in the mold the metal is poured in,and the metallic core driven down by means of a hammer as soon as themolten mass D passes from the liquid into the solid form, after firstremoving the key B. The core 0 is thereby driven down into the liquid ofthe cooling-chamber formed in the hollow base part, A. hen, for example,metallic hubs for wheels are to be cast a special metallic case, g, istitted onto the metallic core 0 and used for hardening one end of thehub. The otherend of the hub is hardened by acollar at the lower partofthe core (J, while the inner surface of the hub is hardened by the shankof the core U, as shown in Fig. 1.

\Vhen casting hubsinto which wrought-iron spokes are to be subsequentlyinserted, loose cores is k are employed in the usual manner to form theholes for the reception of the spokes, as shown in Fig. l.

Then the spokes are to be. connected directly to the hub at the time ofcasting, they have to be placed into the mold, as shown at Z I, Fig. 3,before the casting takes place. In this manner hollow metallic articleswith entirely smooth and hardened surfaces are obtained directly incast-ing, so as to save the time and expense required forturning themoff in a lathe.

Having thus described my invention, I claim as new and desire to secureby Letters Patent-- 1. An apparatus for casting hollow metallicarticles, consisting of a hollow base part having a removable key, andof a metallic mold supported thereon, said mold having a metallic corewhich is guided in a top opening of the base part, substantiallyspecified.

2. In an apparatus for casting hollow metallic articles, the hollow basepart A, having a horizontal removable key, B, and verticalguide-standards H, with a metallic mold, A, having a core, (J, which isguided in an opening in the top of the base part and adapted to bedropped into the same, subst-antiallyasand for the purpose set forth.

FERDINAND TELLANDER.

Witnesses O. A. PEHRsoN, G. N. RYDMAN.

